154 results about "Finger surface" patented technology

A flexible finger sensor having a finger entrance, a sensor holder at a distal end of the assembly, and a fenestrated region disposed between the finger entrance and the sensor holder. A displacement resistant finger sensor and method of use for reducing motion-related artifacts by mechanical isolation from external forces by providing a resilient sensor body having a digit entrance, a sensor holder, and a fenestrated region between the digit entrance and the sensor holder. The sensor holder maintains sensing elements relative to a user's finger, with said sensing elements being in communication with a monitoring device via a lead wire. The lead wire may extend at a lateral edge of the sensor body. A force to the lead wire may be applied so as to distort the fenestrated region without substantially disturbing the sensing elements relative to the finger surface.

A flexible waterproof scrubbing glove having a plurality of cavities for the thumb and fingers joined together to fit a person's hand. A layer of scrubbing bristles built into the entire palm surface and finger surface of the glove including the tips of the finger and thumb stalls, along the sides of the finger and thumb stalls, as well as along the side of the palm portion of the glove. The invention facilitating the cleaning of bath tubs and sinks with their awkward and hard to reach places as well as other surfaces and other cleaning actions.

An improved catheter insertion assembly having a transparent tubular member open at each end; a plunger assembly slidable within the tubular member having a stem portion at a first end; and at least a partially transparent chamber having a needle base and sealing member on a second end of the plunger assembly; an elongated tubular needle embedded within the needle base and extending there from with the needle in fluid communication with the transparent chamber; a catheter assembly, a transparent cannula and a transparent hub attached to the second end with the tubular needle passing longitudinally through the cannula; a fluid passage formed between the needle and the cannula so that when the plunger is retracted a vacuum is established within the fluid passage and blood is visibly drawn through the fluid passage into the transparent cannula and if volume permits, blood then would be visible in the transparent hub, and then if volume permits blood would be visible in the void of the catheter body (barrel) created by pulling the plunger; and wherein the tubular needle is threaded through a lumen of the cannula; and wherein the sealing member provides a sliding seal between the plunger assembly and the transparent tubular member; and wherein, a fluid communication exists through the needle into the flashback chamber of the plunger apparatus and through a porous vent. The distal end of the catheter device described herein has the addition of an external flange and dual plunger paddles which allow dynamic positioning of the fingers and one handed operation. Furthermore these structures are ergonomically associated to maximize finger surface area operation; and wherein the user can change the orientation of the beveled needle.

There is provided an optical finger mouse including two light sources, an image sensor and a processing unit. The two light sources emit light of different wavelengths to illuminate a finger surface. The image sensor receives reflected light from the finger surface to generate a plurality of image frames. The processing unit detects a displacement and a contact status of the finger surface and a physiological characteristic of a user according to the plurality of image frames. There is further provided an electronic device and a physiological characteristic detection device.

A capacitance-type fingerprint sensor. The capacitance-type fingerprint sensor includes a plurality of pixel groups, each of which electrically connects a plurality of sensing electrodes to a plurality of coupling electrodes, respectively; a plurality of first sensing-electrode switches for connecting the sensing electrodes to a voltage source; a plurality of second sensing-electrode switches for interconnecting the sensing electrodes contained in the pixel groups; a plurality of third sensing-electrode switches for interconnecting the pixel groups; and a plurality of coupling-electrode switches for interconnecting the coupling electrodes contained in all pixel groups. Therefore, the fingerprint sensor blocks or corrects capacitance generated by internal components of a fingerprint sensor, such that it acquires a high-quality fingerprint image. Also, the fingerprint sensor corrects or reduces the influence of the dry or moist state of a finger surface, such that a fingerprint image can be more uniformly indicated.

A vein authentication device according to the present invention includes an imaging part for continuously imaging a portion of venation present inside a finger by near-infrared light scattered inside the finger by irradiating a finger surface with the near-infrared light while continuously imaging a portion of fingerprints present on the finger surface or inside the finger by reflected light reflected on the finger surface or inside the finger, a motion vector detection part for detecting a motion vector of the fingerprints, an image synthesis part for synthesizing images picking up a portion of the fingerprints to generate an image of the fingerprints and synthesizing images picking up a portion of the venation to generate an image of the venation, a vein pattern extraction part for extracting a vein pattern from the image of the venation, and an authentication part for performing authentication processing.

A finger grip enhancer for mounting on a selected location on firearms, hand tools and other items having handles or grips for providing an improved finger gripping surface. The grip enhancer can comprise flexible or rigid materials having a high coefficient of friction for an improved gripping surface. The grip enhancer includes a finger grip body, having a top, a bottom and a back surface. The back surface is preferably adapted for receiving an adhesive thereon and attaching the grip enhancer on the selected location on the firearm or the hand tool The finger grip body also includes an ergonomic shaped front finger surface having a top portion tapered downwardly and outwardly into a lower knob portion. The lower knob portion is adapted for receiving a portion of the bottom of a finger and the top of an adjacent finger of the user and preventing slippage thereon.

A system and method reduces the amount of variation in a fingerprint image due to distortion from elastic deformation of the finger surface and projection onto a planar coordinate system. The amount and extent of distortion is estimated, and the process is inverted in a systematic way, so that the amount of distortion is minimized, and the distortion present is consistent, so that different images of the same print will have very similar distortion and thus matching of the fingerprints will be reliable and unaffected by the distortion.

A method for acquiring biometric data of a finger a surface to be imaged includes touchlessly and simultaneously imaging a finger surface to be imaged along at least three different directions into digital images, wherein each point of the surface to be imaged is imaged along at least two of the directions and wherein the surface to be imaged extends from a first nail edge across a finger-ball to a second nail edge. Subsequently, a geometric basic model for at least a part of the finger is determined using at least one of the digital images. Pre-warped images are calculated by geometrically pre-warping the digital images using the geometric basic model. Additionally, a three-dimensional model of the surface to be imaged is reconstructed using a stereoscopic analysis of the pre-warped images and at least one finger characteristic is determined using the three-dimensional model.

The invention discloses a flexible mechanical arm with the buffering function. The flexible mechanical arm comprises a flexible mechanical arm body and a mounting flange. The flexible mechanical arm further comprises an elastic buffering assembly. The elastic buffering assembly is installed between the flexible mechanical arm body and the mounting flange and used for elastically changing the distance between the mounting flange and the flexible mechanical arm body. The flexible mechanical arm body comprises an integrated block, and the integrated block is provided with at least two flexible fingers which are matched with each other to achieve flexible clamping. Each flexible finger comprises a finger base plate and a finger surface. The finger base plates and the finger surfaces define a driving chamber together. The elasticity modulus of the finger base plates is larger than that of the finger surfaces. Each flexible finger is provided with a ventilation opening communicating with the driving chamber, and each ventilation opening communicates with an air course. By the adoption of the flexible mechanical arm, tiny objects can be grabbed on a rugged or tilted working face in a self-adaption mode, the flexible mechanical arm is suitable for various environments and target objects, and the application range is greatly widened.

A compact sensor which maps fingerprints for identification purposes. The sensor consists of an array of pixels with each pixel configured with one or more pickup conductive electrodes surrounded by voltage electrodes of different phases. This configuration performs capacitive differencing to eliminate the large background capacitance without the need for complex sensor circuitry. In addition, the readout lines are electrically shielded from the input voltage lines by an intermediate grounded conductive layer, thereby eliminating the parasitic capacitance and allowing the detection of minute capacitance variation of the finger surface.

The invention discloses a fingerprint identification sensor and a fingerprint identification device of a mobile communication terminal using the sensor, which can correctly identify molded fingerprints. The sensor is equipped with an integrated voltage generator that generates an AC voltage of a specified frequency and provides a voltage to the outer fingerprint of the touched finger, and includes a plurality of fingerprint recognition units for detecting the above-mentioned voltage flowing through the outer fingerprint; Multiple voltage amplifiers that amplify the output of the voltage value. The fingerprint identification device includes: a voltage generator that provides an AC voltage of a specified frequency to the surface of the fingerprint identification sensor and provides the above-mentioned voltage to the surface of the finger touching the surface; a power supply that appropriately changes the voltage of the terminal battery and provides working power to the above-mentioned fingerprint identification sensor. a fingerprint recognition sensor that uses a voltage difference generated by the fingerprint pattern to recognize the fingerprint according to the above-mentioned predetermined frequency voltage; a control unit that uses the voltage difference detected by the fingerprint recognition sensor to obtain the fingerprint pattern.

A low cost capacitive fingerprint sensor which can be fabricated on various substrates, such as large glass or plastic substrates. The sensor is made by depositing and patterning alternate layers of conductive and insulation materials. A pixel of the sensor is comprised of a pick up pad and a plurality of voltage electrodes symmetrically placed around the pick up pad. The symmetry is such that only when a finger surface ridge is present, the pick up pad registers a signal.

Sensor chip, especially for measuring of structures in a finger surface, characterized in that it comprises an electronic ship being in a per se known way provided with a number of sensor electrodes for capacitance measurements, the chip being provided with a first layer comprising a metal or another electrically conducting material over and coupled to the sensor electrodes and a first dielectric layer substantially covering the first metal layer.

A modular frame connection is formed by abutting a front camming surface of a front camming end of a front fastening plate against a rear camming surface of a rear camming end of a rear fastening plate while a front pierced end of the front fastening plate and rear pierced end of the rear fastening plate are separated, inserting the front and rear camming ends between a front and rear flanges of a post or beam, rotating the front pierced end toward the rear pierced end until a front finger surface of the front camming end is disposed insertably between a front lip of the front flange and a web of the post or beam and abutably to the front flange and a front abutment surface substantially orthogonal to the front fastening plate is disposed abutably to the web, rotating the rear pierced end toward the front pierced end until a rear finger surface of the rear camming end is disposed insertably between a rear lip of the rear flange and the web of the post or beam and abutably to the rear flange and a rear abutment surface substantially orthogonal to the rear fastening plate is disposed abutably to the web.

There is provided a mouse control module including two light sources, an image sensor, a processing unit and a communication unit. The two light sources emit light of different wavelengths to illuminate a finger surface. The image sensor receives reflected light from the finger surface to generate a plurality of image frames. The processing unit detects a displacement of the finger surface and a physiological characteristic of a user according to the plurality of image frames. The communication unit encodes and/or sequences the displacement and the physiological characteristic so as to generate finger and physiology information. There is further provided an optical finger mouse.

The invention relates to the field of intelligent attendance and particularly relates to a fingerprint attendance machine capable of quickly identifying fingerprint information. The fingerprint attendance machine comprises a fingerprint module, a humidifying module and a detecting module, wherein the fingerprint module is used for storing fingerprint information pre-recorded by the staff and comparing the fingerprint information re-recorded by the staff every time with the pre-stored fingerprint information; the humidifying module is arranged at one side of the fingerprint module and used for humidifying the dry fingers of the staff to enable the fingerprint information of the staff to be clear; the detecting module is arranged on the side part of a humidifier and is in communication connection with the humidifier; when the fingers of a certain staff are put onto a rotary device, a weight sensor on the rotary device is used for sending a signal to the detecting module, and the detecting module is used for starting the humidifier according to the detected humidity condition of the finger surfaces of the staff. The fingerprint attendance machine disclosed by the invention can be used for improving the fingerprint recording environment of the fingerprint attendance machine and promoting the identifying speed and the identifying accuracy of the fingerprint information.

The invention provides a finger multi-feature comprehensive three-dimensional reconstruction method comprising the following steps: step 1, calibrating a multi-view multi-spectral finger acquisition device; step 2, performing feature matching on the surface texture image of the finger by adopting a multi-view three-dimensional reconstruction algorithm to obtain a sparse three-dimensional point cloud of the surface of the finger and complete multi-view three-dimensional reconstruction; step 3, performing three-dimensional reconstruction on the surface of the finger by adopting a photometric three-dimensional method to obtain dense depth information; step 4, fusing the three-dimensional point cloud subjected to multi-view three-dimensional reconstruction with the dense depth information obtained by the photometric three-dimensional method to obtain a fused three-dimensional Mesh model; and step 5, mapping the surface texture image and the internal vein texture image of the finger to thefused three-dimensional Mesh model to obtain a finger multi-feature comprehensive three-dimensional model. According to the method, the dense three-dimensional model is obtained by fusing multi-view three-dimensional reconstruction and photometric three-dimensional reconstruction so that the situation that the recognition accuracy is reduced due to the three-dimensional modeling method is reduced.

The invention provides a fingerprint identification member, a touch control panel, an input device and a fingerprint identification method. The fingerprint identification member comprises a fingerprint identification module, a grid electrode wire and a signal wire; the grid electrode wire and the signal wire define a plurality of induction areas by crossing arrangement; each induction area is provided with a film transistor and an induction electrode connected to the film transistor; the grid electrode of the film transistor is connected to the grid wire, the source electrode is connected to the signal wire, and the drain electrode is connected to the induction electrode; the signal wire comprises an emission signal wire and a reception signal wire; the induction electrode comprises an emission electrode and a reception electrode; an electric field from the emission electrode to the reception electrode is generated between the adjacent emission electrode and the reception electrode; the fingerprint identification module is connected to the reception signal wire; and the fingerprint texture can be determined through detecting the intensity of the electric field where the finger surface is positioned. The fingerprint identification member, the control panel, the input device and the fingerprint identification method have good adaptability in electronic goods.

The invention provides an optical fingerprint acquisition instrument without keystone distortions. The optical fingerprint acquisition instrument comprises a shell, an acquisition board, an imaging device and a circuit board. The acquisition board at least comprises a transparent contact layer and a transparent luminescent layer which is positioned below the transparent contact layer; and the imaging device is positioned right blow the acquisition board. The acquisition board is characterized in that the transparent luminescent layer also includes a brightening reflection layer which is arranged under an acquisition luminescent zone. The optical fingerprint acquisition instrument uses the acquisition board as an acquisition component of fingerprint images, and the imaging device is positioned right below the acquisition board to ensure that the distances (optical distance) from an acquisition surface to imaging surfaces are accordant, and the keystone distortions of the fingerprint images are eliminated. The brightening reflection layer included in the transparent luminescent layer interior of the acquisition board reflects the light down emitted from the acquisition luminescent zone to the transparent contact layer, so that the light intensity irradiated on finger surfaces are increased, meanwhile the light without fingerprint information transmitted from the bottom of the acquisition board is reduced, thereby improving the contrast radio of the fingerprint acquisition images.

The embodiment of the invention discloses a display screen with a fingerprint acquisition function. The display screen comprises a display screen cover plate, a plurality of display picture elements and a plurality of light sensing picture elements, wherein the display picture elements and the light sensing picture elements are arranged below the display screen cover plate; the plurality of light sensing picture elements are arranged below the display screen cover plate and uniformly distributed in clearances among the plurality of picture elements; each light sensing picture element comprises a light sensing part, and a field diaphragm of which a diaphragm opening is formed above each light sensing part; the light sensing parts are used for receiving light rays which are emitted through the display picture elements, reflected by parts, in contact with the display screen cover plate, of the finger surfaces, and entered through the diaphragm openings of the field diaphragms. According to the display screen with the fingerprint acquisition function, the light sensing picture elements are implanted into the display picture elements; the light sensing picture elements are used for acquiring fingerprint pictures by treating the display picture elements as light emitters, thus the display has the fingerprint recognizing function while realizing the displaying function, and as a result, the integrity, the use convenience and the user experience of a display can be further improved.